Re: [PATCH] net: usbnet: Avoid potential RCU stall on LINK_CHANGE event

On 10.07.25 10:50, John Ernberg wrote:

Having a Gemalto Cinterion PLS83-W modem attached to USB and activating the
cellular data link would sometimes yield the following RCU stall, leading
to a system freeze:

[..]
   

  	if (!netif_carrier_ok(dev->net)) {
  		/* kill URBs for reading packets to save bus bandwidth */
+		usbnet_pause_rx(dev);
  		unlink_urbs(dev, &dev->rxq);
+		usbnet_resume_rx(dev);

This will schedule work.
Do you really want that?

	Regards
		Oliver